PERTH research into the cause of post-weaning multisystemic wasting syndrome (PMWS) could disprove previous international studies.
PMWS has previously been thought to have worked in conjunction with Porcine circo virus, but Murdoch University researcher and lecturer Ross Buddle said this might not be the case.
International studies have shown that Porcine circo virus and PMWS have a close association, but Mr Buddle said it now looked less likely that the circo virus was the primary cause.
"Overseas (institutions) thought it did, but now we think something else may be the cause of the disease, but we don't know what it is," he said.
Australian Pork Limited has funded the Perth research, which started in 1999.
Mr Buddle has been working with Murdoch University Virology Professor Graham Wilcox.
The main idea behind the study is to concur what the status of circo virus and PMWS was in Australia.
"Circo virus does exist in Australia, but we do not know what the significance of this is," Mr Buddle said.
"So far we have failed to confirm that PMWS exists in Australia."
Mr Buddle said the latest findings of possible PMWS cases in NSW and South Australia could be correct.
He said the samples collected by Murdoch University from around Australia showed no signs of PMWS in those specific samples.
But the latest findings were a new situation.